browning



W. H. BROWNING.

TAKE-UP 0R WINDING MECHANISM FOR FABRICS OR THE LIKE.

APPLICATION FILED APR.14. IBM.

1 24,724. Patented Dec. 9, 1919.

' 3 SHEETS-SHEET l- W wazzerJZBrowmZ? rew/MIL. %/fim .W. H. BROWNING.TAKE-UP 0R wmnme MECHANISM r01: FABRICS OR THE LIKE.

APPLICATION FILED APR. l4. 19H.

Patented Dec. 9, 1919.

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W. H. BROWNING. TAKE-UP 0R WINDING MECHANISM FOR FABRICSVOR THE LIKE.

APPLICATION FILED APR. 14. I91].

'1 24,724. Patented: Dec. 9, 1919.

'3 SHEETS-SHEET 3.

UN lTEiD STATES PATENT OFFICE.

WALTER I-IENRY BROWNING, OF WEMBLEY, ENGLAND.

TAKE-UP 0B, WINDING MECHANISM FOR FABRICS OR THE LIKE.

7 Application filed April 14, 1917.

To all whom it may concern Be it known that I, l/VALTER HENRY BROWNING,a subject of the King of Great Britain, residing in W'embley, England,have invented certain new and useful Improvements in Take-Up or WindingMechanisni for Fabrics or the like, of which the following is aspecification.

This invention relates to improvements in take-up mechanism forapparatus of the type in which, for any purpose, such as in recording.apparatus, one or more sheets or hands of paper, fabric or the likematerial is fed step-by-step and is wound onto or taken up by a rotateddrum or roll. Ap paratus of the character to which the invention isapplicable are disclosed in U. S. Patents No. 687,866, November 26,1901, to P. Poe, and No. 1,06'l,753, May 13, 1913, to V. H. Kirchhoff.The invention is designed to provide improved means for taking up on therotated drum or roll equal or approximately equal lengths of such asheet or band as it is fed, notwithstanding the increasing diameter ofsaid drum or roll owing to the growing number of windings of thematerial thereon.

It consists essentially of a drum or roll positively rotated at eachstep of the feed to take up a portion of the sheet or band fed and asuitably mounted spring or weight urged wheel or disk adapted to bepositively rotated against its spring or weight, and on release to beurged by the spring or weight to further rotate the drum in the positivedirection to takeup any remaining slack in the sheet or band. V

The invention will be described with reference to the accompanyingdrawings which illustrate one form of the invention as applied to thetake-up of a recording apparatus, the particular recording apparatusillustrated being similar to that described and shown in U. S. patentapplication Serial No. 162,185.

Figure 1 is an elevation partly in section showing parts of the improvedtake-up mechanism in one position.

Fig. 2 is a similar view showing the parts in another position. 1

' Fig. 3 is a plan view with the parts as shown in Fig. 1.

Fig. 4.- is a sectional side view of the abovementioned recordingapparatus, certain. parts being omitted.

Specification of Letters Patent.

Patented Dec..9, 1919.

Serial No. 162,186.

Fig. 5 is a sectional side View of the recording apparatus in adifferent section plane showing the parts illustrated in Fig. l asapplied to the apparatus.

The recording apparatus shown in Figs. at and 5 being of the kindconstructed and operating as described in the specification accompanyingthe application above referred to needs no detailed description here butit maybe stated that it comprises three separate parts 4:, 5 and 6 onwhich are arranged three strips or bands of paper 1, 2 and 3, whichbands, on being fed forward,

pass around a looper 19 and under a window 20 in the cover plate 20*where a record can be made. On again being fed forward one or more ofthe upper strips may be torn olf while the third strip is wound on thetakeup spool 21 which is driven in the manner described below.

The mechanism for efiecting the feed of the strips of material isactuated from a main shaft 24 suitably mounted on the base of the casing25 and carrying an operating handle 26 for rocking the shaft. Upon theshaft 24 is mounted the forked lever 27 which engages a pin 28 on themain operating slide 29 to reciprocate when shaft 2% is rocked. Theslide 29 is mounted by means of guides 30 in a guide bar 31. I

The parts of the recording apparatus so far mentioned correspond tosimilarly numbered partsillustrated in the above referred tospecification. The other members of the feed mechanism form no part ofthe present invention and need not be specifically referred to here. Thetake-up'spool 21, Fig. 5, is mountedon a shaft a, Figs. 1 to 5, suitablymounted on casing'25. Upon the shaft a is. keyed or otherwise secured aratchet wheel 6 adapted to be operated by any suitable pawl device togive a positive rotation to the shaft at each step of the feed of thesheet or band of fabric or the like. As shown, the pawl c is mounted onan arm 0 pivoted freely on'the shaft o and caused to rock at each stepof the feed by a stop (Z mounted on the reciprocating slide 29 of thefeed mechanism,'a spring 0 or other means being provided to maintain thearm 0 in engagement with the stop (Z. When the stop 0! has a greatertotal travel than that of the arm 0, a stop or lug 6 may beprovidedadapted to engage a pin or the like 0 on the arm 0 to arrest themovement of said arm under the impulse of spring 0 at a desiredposition. A weighted or spring operated detent f is provided to preventany rotation of the ratchetor shaft a in the backward direction.

Also mounted upon the shaft a is a disk or part disk g which is free torotate upon the shaft in a backward direction, but which, when moved inthe forward direction, rotates the shaft with it, any suitable freewheel mechanism being interposed between the disk and the shaft. Asshown, the disk 9 carries a spring urged pawl h adapted to engage theperiphery of the ratchet wheel Z) in such a manner as to ride over itwhen rotating in the backward direction, but to drive it when rotatingin the forward direction. Any suitable means may be provided forperiodically rotating the disk 9 in a backward direction and suchrotation may take place at or about the time that the wheel 5 ispositively rotated in a forward direction. A spring is provided toreturn the disk 9 to normal or starting position and a spring or weighturged detent Z adapted to engage ratchet teeth on the periphery of thedisk is also provided to'prevent such return to normal position untilthe detent is released.

As shown, the disk 9 is reversely rotated by means of the reciprocatingpart on which engages the lug n mounted on the disk and swings itaround.

The part m is carried by a part 32 depending from the slide 29 andtherefore reciprocates simultaneously with the slide which carries thestop (Z.

The detent Z under the action of its spring or weight normally engagesthe teeth on the edge of the disk g and thus prevents any rotation ofthe drum or roll under the action of spring is until the detent Z isreleased, which it is essential should not take place until after thepositive rotation of the drum by the wheel Z and shaft a as abovedescribed. lhe detent Z may be released in any suitable manner at thetime desired. As shown, the detent is released by means of a slide 0having a lug p thereon adapted to engage the end of the detent Z towithdraw it from the teeth of the disk 9 and so liberate it to rotateforwardly under the action of the spring is. In the drawing, the slideis shown to be operated by a lug g on the part on en aging acorresponding lug 1" on the slide 0 at the end of its return stroke, aspring 5 bein provided to return the slide and permit the detent Z toengage the teeth on the disk when the part m again commences its forwardmovement.

It. is obvious that as the diameter of the drum or roll increases, theamount of slack to be taken up will be reduced and the movement of thedisk 9 under the action of spring Z: will become less and less, fromwhich it follows that when the slack is all taken up the disk 9 willstill be under tension by the spring 7X3. Under these circumstances, andunless it was prevented, directly the strip or band commenced to be fedfor ward, the spring is, rotating the disk g, would commence to take upthe feed. The detent Z, however, engaging the teeth on the periphery ofthe disk 9 prevents such rotation and permits the positive rotation ofthe orum or roll to take place before releasing the disk to take up theremaining slack.

It is obvious, of course, that the length of material fed forward ateach step of the feed to be taken up by the apparatus must not be lessthan the peripheral movement of the drum or roll at its maximum diameterwhen positively rotated by the movement of the lug (Z.

The operation of the apparatus is as follows Supposing a given length ofthe material 3 to have been fed forward and the drum or roll to be atless than its maximum diameter, the lug (Z now engages the arm 0 androtates the wheel 6 and that on shaft a and with it the drum or roll 21.This causes the drum or roll to take up only a portion of the materialfed forward, leaving a slack length of material still to be dealt with,the length of which varies according to the diameter of the drum orroll. At the same time that the shaft 0. was being positively rotatedthe disk 9 was rotated in a reverse direction, putting its spring is intension. l/Vhen therefore, the detent Z is released on the return ofslide 0, the spring is causes the disk 9 to rotate forwardly, which, bymeans of the pawl h, causes a further forward rotation of the shaft aand the drum or roll until the slack is taken up when the rotation ofthe disk 9 ceases. It will be obvious that any varying length of slackcan be taken up from nothing up to a length equal to the peripheralmovement of the drum corresponding to the full movement of the disk g.

It will be obvious that when the reverse movement of the disk 9 is equalto :that of the forward movement of wheel 6, the apparatus is capable oftaking up a length of material equal to twice that wound on the roll ordrum by the positive rotation thereof. In other words, the apparatus maybe employedto take up equal lengths of material as they are fed forwarduntil the diameter of the drum or roll, owing to the material woundthereon, is increased to twice its original diameter. It will,therefore,-be seen that the amount of slack taken up by the disk 9 willon each complete rotation of the shaft (0 with the drum or roll becomeslightly less, until, when the diameter is doubled, it becomes m'Z, thewhole of the material fed being taken up by the 'positive rotation ofthe drum or roll, the

apparatus being, of course, calculated so that thepositive rotation ofthe drum or roll at its maximum diameter takes up, the full length. ofmaterial fed. If the possible movement of the disk 9 is made greaterthan that of wheel Z), the, ratio between the minimum and maximumdiameters of the drum or roll may be correspondingly increased,

' Having thus describedthe said invention and the best means I know ofcarrying the same into practical effect, I claim 1. In apparatus of thetype herein referred to, in combination with a step-bystep feed device,mechanism for taking up at each step of the feed approximately equallengths of a band of flexible material fed by the said device, saidmechanism comprising a shaft, a drum fixed to the shaft, means operatedby a reciprocating part of the feed device for positively rotating theshaft and drum at each step of the feed to take up partof the fedmaterial, automatically operating means for rotating the drumintermittently to a further extent to take up any remaining part of thefed material, and means operating to retain said automatically operatingmeans in inoperative condition until aftervthe positive rotation of theshaft and drum has been effected.

2. In apparatus of the type herein referred to, the combination with astep-bystep feed device, of mechanism for taking up at each step of thefeed approximately equal lengths of a band of flexible material fed bythe said device, said mechanism comprising a shaft, means operated by amov ing part of the feed device for positively rotating the shaftforwardly at each step of the feed, a drum fixed to the shaft andadapted at each rotation to take up a portion of the fed band, a diskmounted in free-wheel fashion on the shaft, an appliance constantlytending to rotate the disk forwardly against the tension of the band,means, operated by a moving part of the feed device, adapted to engageand hold the disk when the said tension is released during the positiverotation of the saidshaft,

thereby preventing the forward rotation of the disk, means operated by amoving part of the feed device for positively rotating the diskbaokwardly against the action of the said appliance into an operativeposition during a positive forward rotation of the shaft and drum, meansfor releasing the said holding means after termination of the positiverotation of the shaft, and means, automatically operating when the diskis released, to couple the disk to the shaft whereby the shaft and drumreceive a further rotation when the disk rotatesforwardly under, theaction of the said appliance and any remaining slackvin the band istaken up. w

3. In apparatus of thetype herein, referred to, the combination with astep-bystep feed device, of mechanism for taking up at each step of thefeed approximately equal lengths of a band of flexible material fed bythe said device, said mechanism comprising a shaft, means for positivelyrotating the shaft forwardly at each step of the feed, said meansconsisting of .a ratchet wheel on said shaft, pawl means operated by areciprocating part of the feed device, a drum fixed to the shaft andadapted at each rotation to take up a portion of the fed band, a diskmounted in free-wheel fashion on the shaft, an appliance con-' stantlytending to rotate the disk forwardly against the tension of the band,means, operated by a moving part of the feed device adapted to engageand hold the disk when the said tension isrelease'd during the positiverotation of the said shaft, thereby preventing the forward rotation ofthe disk, means operated by a moving part of the feed device forpositively rotating the disk backwardly against the action ofithe saidappliance into an operative-position during a positive forward rotationof the shaft and drum,,means for releasing the said holding means aftertermination of the positive rotation of the shaft, and means,automatically operating when the disk is released, to couple the disk tothe said ratchet wheel whereby the shaft and drum receive a fur- Y therrotation when the disk rotates forance and any remaining slack in theband is taken up. V

4:. In apparatus of the type herein referred to, the combination with astep-bystep feed device, of mechanism for taking up at each step of thefeed approximately equal lengths of a band of flexible material fed bythe said device, said mechanism com prlsing a shaft, means operated by amoving part of the feed mechanism for positively rotating the shaftforwardly at each step of the feed, a drum fixed to the shaft andadapted at each rotation to take up a porvtion ofthe fed band, a disk,provided peripherally with ratchet teeth, mounted in free-wheel fashionon the shaft, an appliance constantly tending to rotate the diskforwardly against the tension of the band, means, comprising aspring-urged detentcontrolled by a reciprocating part of the feeddevice, adapted to engagewith a ratchet tooth on the disk whenthe saidtension is released durlng the positive rotation of the said shaftthereby preventing the forward rotation of the disk, means operated by amoving part of the feed device for positively rotating the diskbackwardly against the action of the said appliance into an operativeposition during a positive forward rotation of the shaft and drum, meansfor withdrawing the detent from holding engagement with the disk afterthe termination of the positive rotation of the shaft, and meansautomatically operating when the disk is released, to couple the disk tothe shaft whereby the shaft and drum receive a further rotation when thedisk rotates forwardly under the action of the said appliance and anyremaining slack in the band is taken up.

5. In apparatus of the type herein referred to, the combination with astep-bystep feed device, of mechanism for taking up at each step of thefeed approximately equal lengths of a band of flexible material fed bythe said device, said mechanism comprising a shaft, means for positivelyrotating the shaft forwardly at each step of the feed, said meansconsisting of a ratchet wheel on said shaft, pawl means operated by areciprocating part of the feed device, a drum fixed to the shaft andadapted at each rotation to take up a portion of the fed band, a disk,provided peripherally with ratchet teeth, mounted in free-wheel fashionon the shaft, an appliance constantly tending to rotate the diskforwardly against the tension of the band, means, comprising aspring-urged detent controlled by a reciprecating part of the feeddevice, adapted to engage with a ratchet tooth on the disk when the saidtension is released during the positive rotation of the said shaftthereby preventing the forward rotation of the disk, means operated by amoving part of the feed device for positively rotating the disk back-Wardly against the action of the said appliance into an operativeposition during a positive forward rotation of the shaft and drum, meansfor withdrawing the detent from holding engagement with the disk af\VALTER HENRY BROWNING.

Witnesses:

C. S. HOPKINS, B. H. DURHAM.

